๐Ÿ“ข Too many exams? Donโ€™t know which one suits you best? Book Your Free Expert ๐Ÿ‘‰ call Now!

  • google app store apple app store
  • โœ–

      Question

      A train travelling at a speed of 80 km/h, takes 27

      seconds to cross a pole. If the train increased its speed by 10 km/h, how long would it take to cross a 150-metre-long platform?
      A 35 seconds Correct Answer Incorrect Answer
      B 30 seconds Correct Answer Incorrect Answer
      C 26 seconds Correct Answer Incorrect Answer
      D 32 seconds Correct Answer Incorrect Answer

      Solution

      80 km/h = 80 X (5/18) = (200/9) m/s So, length of the train = (200/9) X 27 = 600 metres Increased speed of the train = 80 + 10 = 90 km/h = 90 X (5/18) = 25 m/s So, time taken to cross a 150-metre-long platform = (600 + 150) รท 25 = 30 seconds

      Practice Next

      Relevant for Exams:

      ask-question